This component spawns prefabs inside a box. More...

#include <SpawnBoxComponent.h>

Inheritance diagram for ezSpawnBoxComponent:

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Public Member Functions
virtual void	SerializeComponent (ezWorldWriter &inout_stream) const override
	Override this to save the current state of the component to the given stream.

virtual void	DeserializeComponent (ezWorldReader &inout_stream) override
	Override this to load the current state of the component from the given stream. More...

void	StartSpawning ()
	When called, the component starts spawning the chosen number of prefabs over the set duration. More...

void	SetHalfExtents (const ezVec3 &value)

const ezVec3 &	GetHalfExtents () const

bool	GetSpawnAtStart () const

void	SetSpawnAtStart (bool b)

bool	GetSpawnContinuously () const

void	SetSpawnContinuously (bool b)

Public Member Functions inherited from ezComponent
void	SetActiveFlag (bool bEnabled)
	Sets the active flag of the component, which affects its active state. More...

bool	GetActiveFlag () const
	Checks whether the 'active flag' is set on this component. Note that this does not mean that the component is also 'active'. More...

bool	IsActive () const
	Checks whether this component is in an active state. More...

bool	IsActiveAndInitialized () const
	Returns whether this component is active and initialized. More...

bool	IsActiveAndSimulating () const
	Whether the component is currently active and simulation has been started as well. More...

ezComponentManagerBase *	GetOwningManager ()
	Returns the corresponding manager for this component.

const ezComponentManagerBase *	GetOwningManager () const
	Returns the corresponding manager for this component.

ezGameObject *	GetOwner ()
	Returns the owner game object if the component is attached to one or nullptr.

const ezGameObject *	GetOwner () const
	Returns the owner game object if the component is attached to one or nullptr.

ezWorld *	GetWorld ()
	Returns the corresponding world for this component.

const ezWorld *	GetWorld () const
	Returns the corresponding world for this component.

ezComponentHandle	GetHandle () const
	Returns a handle to this component.

ezUInt32	GetUniqueID () const
	Returns the unique id for this component.

void	SetUniqueID (ezUInt32 uiUniqueID)
	Sets the unique id for this component.

void	EnsureInitialized ()
	Ensures that the component is initialized. Must only be called from another component's Initialize callback.

void	EnsureSimulationStarted ()
	Ensures that the OnSimulationStarted method has been called. Must only be called from another component's OnSimulationStarted callback.

EZ_ALWAYS_INLINE bool	SendMessage (ezMessage &ref_msg)
	Sends a message to this component.

EZ_ALWAYS_INLINE bool	SendMessage (ezMessage &ref_msg) const

void	PostMessage (const ezMessage &msg, ezTime delay=ezTime::MakeZero(), ezObjectMsgQueueType::Enum queueType=ezObjectMsgQueueType::NextFrame) const
	Queues the message for the given phase. The message is processed after the given delay in the corresponding phase.

virtual bool	HandlesMessage (const ezMessage &msg) const
	Returns whether the given Message is handled by this component.

void	SetUserFlag (ezUInt8 uiFlagIndex, bool bSet)
	Be careful to check which flags may already be in use by base classes.

bool	GetUserFlag (ezUInt8 uiFlagIndex) const
	Retrieves a custom flag. Index must be between 0 and 7.

void	SetCreatedByPrefab ()
	Adds ezObjectFlags::CreatedByPrefab to the component. See the flag for details.

bool	WasCreatedByPrefab () const
	Checks whether the ezObjectFlags::CreatedByPrefab flag is set on this component.

Public Member Functions inherited from ezReflectedClass
virtual const ezRTTI *	GetDynamicRTTI () const

bool	IsInstanceOf (const ezRTTI *pType) const
	Returns whether the type of this instance is of the given type or derived from it.

template<typename T >
EZ_ALWAYS_INLINE bool	IsInstanceOf () const
	Returns whether the type of this instance is of the given type or derived from it.

Public Attributes
ezTime	m_SpawnDuration

ezUInt16	m_uiMinSpawnCount = 5

ezUInt16	m_uiSpawnCountRange = 5

ezPrefabResourceHandle	m_hPrefab

ezAngle	m_MaxRotationZ
	The spawned object's forward direction may deviate this amount from the spawn box's forward rotation. This is accomplished by rotating around the Z axis.

ezAngle	m_MaxTiltZ
	The spawned object's Z (up) axis may deviate by this amount from the spawn box's Z axis.

Protected Member Functions
virtual void	OnSimulationStarted () override
	This method is called once for active components, at the start of the next world update, but only when the world is simulated. More...

Protected Member Functions inherited from ezComponent
	ezComponent ()
	Keep the constructor private or protected in derived classes, so it cannot be called manually.

bool	IsDynamic () const
	Returns whether this component is dynamic and thus can only be attached to dynamic game objects.

virtual ezWorldModuleTypeId	GetTypeId () const =0

virtual ezComponentMode::Enum	GetMode () const =0

virtual void	Initialize ()
	Can be overridden for basic initialization that depends on a valid hierarchy and position. More...

virtual void	Deinitialize ()
	This method is called before the component is destroyed. A derived type can override this method to do common de-initialization work. More...

virtual void	OnActivated ()
	This method is called when the component gets activated. More...

virtual void	OnDeactivated ()
	This method is called when the component gets deactivated. More...

void	EnableUnhandledMessageHandler (bool enable)
	By default disabled. Enable to have OnUnhandledMessage() called for every unhandled message.

virtual bool	OnUnhandledMessage (ezMessage &msg, bool bWasPostedMsg)
	When EnableUnhandledMessageHandler() was activated, this is called for all messages for which there is no dedicated message handler. More...

virtual bool	OnUnhandledMessage (ezMessage &msg, bool bWasPostedMsg) const
	When EnableUnhandledMessageHandler() was activated, this is called for all messages for which there is no dedicated message handler. More...

bool	IsInitialized () const

bool	IsInitializing () const

bool	IsSimulationStarted () const

Additional Inherited Members
Static Public Member Functions inherited from ezNoBase
static const ezRTTI *	GetStaticRTTI ()

Protected Attributes inherited from ezComponent
const ezRTTI *	m_pMessageDispatchType = nullptr
	Messages will be dispatched to this type. Default is what GetDynamicRTTI() returns, can be redirected if necessary.

Detailed Description

This component spawns prefabs inside a box.

The prefabs are spawned over a fixed duration. The number of prefabs to spawn over the time duration is randomly chosen. Each prefab may get rotated around the Z axis and tilted away from the Z axis. If desired, the component can start spawning automatically, or it can be (re-)started from code. If 'spawn continuously' is enabled, the component restarts itself after the spawn duration is over, thus for every spawn duration the number of prefabs to spawn gets reevaluated.

Member Function Documentation

◆ DeserializeComponent()

void ezSpawnBoxComponent::DeserializeComponent ( ezWorldReader & inout_stream )

overridevirtual

Override this to load the current state of the component from the given stream.

The active state will be automatically serialized. The 'initialized' state is not serialized, all components will be initialized after creation, even if they were already in an initialized state when they were serialized.

Reimplemented from ezComponent.

◆ OnSimulationStarted()

void ezSpawnBoxComponent::OnSimulationStarted ( )

overrideprotectedvirtual

This method is called once for active components, at the start of the next world update, but only when the world is simulated.

This is the one preferred method to setup typical game logic. In a pure game environment there is no practical difference between OnActivated() and OnSimulationStarted(), as OnSimulationStarted() will be called right after OnActivated().

However, when a scene is open inside the editor, there is an important difference: OnActivated() is called once the component was created. OnSimulationStarted() is only called once the game simulation is started inside the editor. As an example, if a component starts a sound in OnActivated(), that sound will play right after the scene has been loaded into the editor. If instead the sound gets started in OnSimulationStarted(), it will only play once the user starts the game mode inside the editor.

Additionally, OnSimulationStarted() is only executed once, even if the ezWorld pauses and resumes world simulation multiple times. However, note that it will be called again after the component has been deactivated and is activated again.

See also: OnActivated(), OnDeactivated(), Initialize(), Deinitialize(), OnSimulationStarted()

Reimplemented from ezComponent.

◆ StartSpawning()

void ezSpawnBoxComponent::StartSpawning ( )

When called, the component starts spawning the chosen number of prefabs over the set duration.

If this is called while the component is already active, the internal state is reset and it starts over.

The documentation for this class was generated from the following files:

/home/runner/work/ezEngine/ezEngine/Code/Engine/GameEngine/Gameplay/SpawnBoxComponent.h
/home/runner/work/ezEngine/ezEngine/Code/Engine/GameEngine/Gameplay/Implementation/SpawnBoxComponent.cpp

Public Member Functions

Public Attributes

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ DeserializeComponent()

◆ OnSimulationStarted()

◆ StartSpawning()